Investigation of Jointed Plain Concrete Pavement Deterioration at Joints and the Potential Contribution of Deicing Chemicals

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General Information
Study Number: TPF-5(224)
Lead Organization: Iowa Department of Transportation
Contract Start Date: Nov 01, 2009
Solicitation Number: 1227
Partners: CO, FHWA, IADOT, IN, MI, MN, NY, SD, WI
Contractor(s): Quality Saw & Seal,PCA
Status: Closed
Est. Completion Date: Jun 30, 2012
Contract/Other Number:
Last Updated: Oct 04, 2016
Contract End Date: Dec 31, 2015
Financial Summary
Contract Amount: $510,309.00
Total Commitments Received: $540,308.00
100% SP&R Approval: Approved
Contact Information
Lead Study Contact(s): Brian Worrel
brian.worrel@iowadot.us
Phone: 515-239-1471
FHWA Technical Liaison(s): Ahmad Ardani
Ahmad.Ardani@dot.gov
Phone: 202- 493-3422
Study Champion(s): Tammy Bailey
Tammy.Bailey@iowadot.us
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Colorado Department of Transportation 2010 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2011 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2012 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2013 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Federal Highway Administration 2011 $20,000.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Federal Highway Administration 2012 $25,000.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Federal Highway Administration 2013 $0.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Indiana Department of Transportation 2010 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2011 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2012 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2013 $15,000.00 John Weaver 317-232-7588
Iowa Department of Transportation 2009 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2010 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2011 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2012 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2014 $30,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Michigan Department of Transportation 2010 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2011 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2012 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2013 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Minnesota Department of Transportation 2010 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2011 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2012 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2013 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
New York State Department of Transportation 2009 $0.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2010 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2011 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2012 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2013 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
South Dakota Department of Transportation 2010 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2011 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2012 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2013 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
Wisconsin Department of Transportation 2010 $15,000.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov
Wisconsin Department of Transportation 2011 $15,000.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov
Wisconsin Department of Transportation 2012 $15,308.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov

Study Description

Problem Description:

A recently completed study SD2002-01 Investigation of the Long Term Effects of Magnesium Chloride and other Concentrated Salt Solutions on Pavement and Structural Portland Cement Concrete conducted by Michigan Technological University identified several chemical and physical mechanisms which can lead to concrete deterioration over an extended period of time due to repeated exposure to concentrated deicing solutions. One of the tasks in the study was to determine the life cycle cost implications of exposure to various deicing chemicals for pavements and structures. Unfortunately, this task was not accomplished as field evidence of deterioration was lacking, as was documentation of deicer usage. The field investigations consisted of coring various pavements and structures and were mostly completed in 2002. Follow-up work was done on several promising sites in 2005 which yielded compelling evidence of deicer-induced damage but the deicing history for the sites was ambiguous. Overall, the evidence suggested that potential impacts to concrete from winter maintenance practices utilizing concentrated deicers are slow to develop and insufficient time may have passed to yield a clear picture of deterioration.

Interestingly, during the last several years, a problem has arisen of national significance involving severe deterioration of concrete joints on many pavements in states where deicing chemicals are routinely used. Although no cause and effect has been determined, the relatively recent switch to concentrated deicing chemicals such as sodium and magnesium chloride brines coincides with the development of these joint problems and may be a primary contributor to the distress. The characteristics of the distress are often anomalous compared to know distress mechanisms and manifest in a way consistent with the deterioration mechanisms identified in the above research project.

The goal of this research project is to investigate the causes of this joint deterioration, estimate impacts based on an understanding of the problem and to develop repair, material and construction strategies to minimize the sources.

Objectives

Research Objectives:

1. To determine the causes of anomalous concrete joint deterioration nationwide.

2. To quantify any contributions to joint deterioration due to deicing chemicals and develop estimates of service reduction and life cycle costs.

3. To develop recommendations based on research results for minimizing future joint deterioration on both existing pavements and new construction including possible repair methodologies and specification modifications.

Scope of Work

Research Tasks:

1. Perform a literature search on the incidence of PCC joint deterioration nationwide and any proximate causes.

2. Conduct a survey of states and Canadian provinces to determine the incidence of joint deterioration, collect available information on possible causes, including construction practices, maintenance and repair activities, current deicing/anti-icing practices and other concrete performance issues. Distribute the survey, after a panel review of the draft, to obtain suitable information for use in conducting the research.

3. Select appropriate locations for coring and extensive concrete analysis based on survey results and panel input. Each participating state will provide a list of at least two potential sites, including a control, for consideration at the meeting outlined in Task 4. Documentation provided for each site will include age and service history, concrete mix design, aggregate characterization (coarse and fine), method of curing, deicer types and application history, sealant, climatic conditions and the presence and type of any concrete surface treatments.

4. Meet with the technical panel four months after initiation of the project to discuss the project scope and finalize the list of coring locations and develop a sampling plan for each.

5. Examine concrete field samples that will be obtained by the state DOTs, with the cooperation of the researchers, using appropriate test methods to determine concrete quality, hardened air content, permeability, possible mechanisms of deterioration and any effects due to various deicers including a chemical analyses of the cement paste for chloride, sodium and magnesium ions in the top and bottom portion of each specimen (estimated xx cores).

6. Develop a laboratory testing plan, based on any evidence obtained from field cores, designed to duplicate, in an accelerated fashion, the joint deterioration process, or processes, emphasizing any chemical or mechanical agencies which may be involved.

7. Provide an interim report summarizing the results obtained from completing the above tasks and outlining necessary further laboratory testing of both field and laboratory specimens, both to demonstrate any mechanisms thought to cause joint deterioration and to validate proposed methods to repair damage in existing concrete and mitigate any future damage in new concrete.

8. Meet with the technical panel at the researcher's facility to review the interim report and scope of work prior to approval for further testing.

9. Conduct the second phase of laboratory testing to demonstrate joint deterioration by under controlled conditions.

10. Develop joint repair guidelines based on the field and laboratory results and any input from state DOTs as to successful repair strategies.

11. Develop general guidelines for current practices, which will insure minimal damage to concrete pavements and structures while allowing the ongoing application of appropriate liquid deicers if they are implicated in the deterioration.

12. Estimate effects on concrete life and performance characteristics based on the utilization of different deicers and proposed mechanisms of deterioration with various concrete types using available deicer application strategies and develop life cycle cost analyses derived from the research results.

13. Prepare a final report and executive summary of the literature review, research methodology, findings, conclusions, guidelines and recommendations.

14. Make an executive presentation to the research panel and provide each panel member with an MS PowerPoint version of the presentation after submission of the final report.

Comments

The scope of work indicated here is preliminary only. The actual scope of work will be developed by a technical panel of states' technical representatives to the project.

A commitment of $15,000 per year for 4 years from 6 states is requested.

Documents Attached
Title File/Link Type Privacy Download
Final Report: August 2012 joint_deterioration_report_w_cvr.pdf Final Report Public
Acceptance Memo 2014 TPF-5(224) Pooled Fund acceptance memo.pdf Memorandum Public
TPF-5(224) Closeout Funding Spreadsheet TPF-5(224) Closeout Funding Spreadsheet.pdf Other Public
TPF-5(224) Closeout Letter TPF-5(224) Closeout Letter - Signed.pdf Other Public
Quarterly Progress Report: January 2010 - March 2010 Qtr_Rpt_3-31-10_joint.pdf Quarterly Progress Report Public
Quarterly Progress Report: April 2010 - June 2010 6-30-100qtrreptpf5_224.pdf Quarterly Progress Report Public
Quarterly Progress Report: July 2010 - September 2010 TPF5(224)20103rdQ.pdf Quarterly Progress Report Public
Quarterly Progress Report: October 2010 - December 2010 TPF5(224)JointDeteriorationFY11qtr2.pdf Quarterly Progress Report Public
Quarterly Progress Report: January - March 2011 TPF-5(224) Quarterly Report 3-31-11.pdf Quarterly Progress Report Public
Quarterly Report: April - June 2011 TPF-5(224) Quarterly Report_Apr11 - Jun11.pdf Quarterly Progress Report Public
Quarterly Report: July - Sept. 2011 TPF-5(224)_Jul-Sept2011.docx Quarterly Progress Report Public
Quarterly Report: December 2011 5(224) Dec2011 Qrtly Rpt.pdf Quarterly Progress Report Public
Quarterly Report: March 2012 5(224) FY12 qtr3.pdf Quarterly Progress Report Public
Quarterly Report: June 2012 June 2012 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: September 2012 TPF-5(224) Sept 2012.pdf Quarterly Progress Report Public
Quarterly Report: December 2012 5(224) Dec 2012 QR.pdf Quarterly Progress Report Public
Quarterly Report: March 2013 5(224)March 2013.pdf Quarterly Progress Report Public
Quarterly Report: June 2013 TPF-5(224) 2013 Q2.pdf Quarterly Progress Report Public
Quarterly Report: September 2013 TPF-5(224) Q3.pdf Quarterly Progress Report Public
Quarterly Report: Period Ending Dec 2013 5(224) QPR Dec 2013.docx Quarterly Progress Report Public
Quarterly Report: March 2014 5(224) QR March 2014.pdf Quarterly Progress Report Public
Quarterly Report: June 2014 TPF(224)_June 2014.docx Quarterly Progress Report Public
Quarterly Report: September 2014 TPF5(224)_September2014.pdf Quarterly Progress Report Public
Quarterly Report: December 2014 TPF-5 (224).pdf Quarterly Progress Report Public
Quarterly Report: March 2015 TPF-5(224)_March2015.pdf Quarterly Progress Report Public
Quarterly Report: June 2015 15_2 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: December 2015 2015_12-31 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: March 2016 2016_03-31 QPR 5(224).pdf Quarterly Progress Report Public
Effect of the Interfacial Zone Paper (Seattle 2012) TPF5(224) Zhang and Taylor_Seattle 2012.pdf Report Public
Joint Performance Manual: July 2012 optimum_joint_performance_guide1.pdf Report Public

No document attached.

Investigation of Jointed Plain Concrete Pavement Deterioration at Joints and the Potential Contribution of Deicing Chemicals

General Information
Study Number: TPF-5(224)
Lead Organization: Iowa Department of Transportation
Contract Start Date: Nov 01, 2009
Solicitation Number: 1227
Partners: CO, FHWA, IADOT, IN, MI, MN, NY, SD, WI
Contractor(s): Quality Saw & Seal,PCA
Status: Closed
Est. Completion Date: Jun 30, 2012
Contract/Other Number:
Last Updated: Oct 04, 2016
Contract End Date: Dec 31, 2015
Financial Summary
Contract Amount: $510,309.00
Total Commitments Received: $540,308.00
100% SP&R Approval:
Contact Information
Lead Study Contact(s): Brian Worrel
brian.worrel@iowadot.us
Phone: 515-239-1471
FHWA Technical Liaison(s): Ahmad Ardani
Ahmad.Ardani@dot.gov
Phone: 202- 493-3422
Commitments by Organizations
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Colorado Department of Transportation 2010 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2011 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2012 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Colorado Department of Transportation 2013 $15,000.00 Aziz Khan Aziz Khan aziz.khan@state.co.us
Federal Highway Administration 2011 $20,000.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Federal Highway Administration 2012 $25,000.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Federal Highway Administration 2013 $0.00 Tom Harman Tom Harman 410-962-0134 tom.harman@fhwa.dot.gov
Indiana Department of Transportation 2010 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2011 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2012 $15,000.00 John Weaver 317-232-7588
Indiana Department of Transportation 2013 $15,000.00 John Weaver 317-232-7588
Iowa Department of Transportation 2009 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2010 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2011 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2012 $15,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Iowa Department of Transportation 2014 $30,000.00 Todd Hanson Cheryl Cowie 515-239-1447 Cheryl.Cowie@iowadot.us
Michigan Department of Transportation 2010 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2011 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2012 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2013 $15,000.00 John Staton Andre' Clover 517-749-9001 clovera@michigan.gov
Minnesota Department of Transportation 2010 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2011 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2012 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
Minnesota Department of Transportation 2013 $15,000.00 Maria Masten Lisa Jansen 651-366-3779 lisa.jansen@state.mn.us
New York State Department of Transportation 2009 $0.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2010 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2011 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2012 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
New York State Department of Transportation 2013 $15,000.00 William Cuerdon Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
South Dakota Department of Transportation 2010 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2011 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2012 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
South Dakota Department of Transportation 2013 $15,000.00 David Huft David Huft 605-773-3358 dave.huft@state.sd.us
Wisconsin Department of Transportation 2010 $15,000.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov
Wisconsin Department of Transportation 2011 $15,000.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov
Wisconsin Department of Transportation 2012 $15,308.00 James Parry Lynn Hanus 608-267-2294 lynnm.hanus@dot.wi.gov

Study Description

Study Description

Problem Description:

A recently completed study SD2002-01 Investigation of the Long Term Effects of Magnesium Chloride and other Concentrated Salt Solutions on Pavement and Structural Portland Cement Concrete conducted by Michigan Technological University identified several chemical and physical mechanisms which can lead to concrete deterioration over an extended period of time due to repeated exposure to concentrated deicing solutions. One of the tasks in the study was to determine the life cycle cost implications of exposure to various deicing chemicals for pavements and structures. Unfortunately, this task was not accomplished as field evidence of deterioration was lacking, as was documentation of deicer usage. The field investigations consisted of coring various pavements and structures and were mostly completed in 2002. Follow-up work was done on several promising sites in 2005 which yielded compelling evidence of deicer-induced damage but the deicing history for the sites was ambiguous. Overall, the evidence suggested that potential impacts to concrete from winter maintenance practices utilizing concentrated deicers are slow to develop and insufficient time may have passed to yield a clear picture of deterioration.

Interestingly, during the last several years, a problem has arisen of national significance involving severe deterioration of concrete joints on many pavements in states where deicing chemicals are routinely used. Although no cause and effect has been determined, the relatively recent switch to concentrated deicing chemicals such as sodium and magnesium chloride brines coincides with the development of these joint problems and may be a primary contributor to the distress. The characteristics of the distress are often anomalous compared to know distress mechanisms and manifest in a way consistent with the deterioration mechanisms identified in the above research project.

The goal of this research project is to investigate the causes of this joint deterioration, estimate impacts based on an understanding of the problem and to develop repair, material and construction strategies to minimize the sources.

Objectives

Research Objectives:

1. To determine the causes of anomalous concrete joint deterioration nationwide.

2. To quantify any contributions to joint deterioration due to deicing chemicals and develop estimates of service reduction and life cycle costs.

3. To develop recommendations based on research results for minimizing future joint deterioration on both existing pavements and new construction including possible repair methodologies and specification modifications.

Scope of Work

Research Tasks:

1. Perform a literature search on the incidence of PCC joint deterioration nationwide and any proximate causes.

2. Conduct a survey of states and Canadian provinces to determine the incidence of joint deterioration, collect available information on possible causes, including construction practices, maintenance and repair activities, current deicing/anti-icing practices and other concrete performance issues. Distribute the survey, after a panel review of the draft, to obtain suitable information for use in conducting the research.

3. Select appropriate locations for coring and extensive concrete analysis based on survey results and panel input. Each participating state will provide a list of at least two potential sites, including a control, for consideration at the meeting outlined in Task 4. Documentation provided for each site will include age and service history, concrete mix design, aggregate characterization (coarse and fine), method of curing, deicer types and application history, sealant, climatic conditions and the presence and type of any concrete surface treatments.

4. Meet with the technical panel four months after initiation of the project to discuss the project scope and finalize the list of coring locations and develop a sampling plan for each.

5. Examine concrete field samples that will be obtained by the state DOTs, with the cooperation of the researchers, using appropriate test methods to determine concrete quality, hardened air content, permeability, possible mechanisms of deterioration and any effects due to various deicers including a chemical analyses of the cement paste for chloride, sodium and magnesium ions in the top and bottom portion of each specimen (estimated xx cores).

6. Develop a laboratory testing plan, based on any evidence obtained from field cores, designed to duplicate, in an accelerated fashion, the joint deterioration process, or processes, emphasizing any chemical or mechanical agencies which may be involved.

7. Provide an interim report summarizing the results obtained from completing the above tasks and outlining necessary further laboratory testing of both field and laboratory specimens, both to demonstrate any mechanisms thought to cause joint deterioration and to validate proposed methods to repair damage in existing concrete and mitigate any future damage in new concrete.

8. Meet with the technical panel at the researcher's facility to review the interim report and scope of work prior to approval for further testing.

9. Conduct the second phase of laboratory testing to demonstrate joint deterioration by under controlled conditions.

10. Develop joint repair guidelines based on the field and laboratory results and any input from state DOTs as to successful repair strategies.

11. Develop general guidelines for current practices, which will insure minimal damage to concrete pavements and structures while allowing the ongoing application of appropriate liquid deicers if they are implicated in the deterioration.

12. Estimate effects on concrete life and performance characteristics based on the utilization of different deicers and proposed mechanisms of deterioration with various concrete types using available deicer application strategies and develop life cycle cost analyses derived from the research results.

13. Prepare a final report and executive summary of the literature review, research methodology, findings, conclusions, guidelines and recommendations.

14. Make an executive presentation to the research panel and provide each panel member with an MS PowerPoint version of the presentation after submission of the final report.

Comments

The scope of work indicated here is preliminary only. The actual scope of work will be developed by a technical panel of states' technical representatives to the project.

A commitment of $15,000 per year for 4 years from 6 states is requested.

Title File/Link Type Private
Final Report: August 2012 joint_deterioration_report_w_cvr.pdf Final Report Public
Acceptance Memo 2014 TPF-5(224) Pooled Fund acceptance memo.pdf Memorandum Public
TPF-5(224) Closeout Funding Spreadsheet TPF-5(224) Closeout Funding Spreadsheet.pdf Other Public
TPF-5(224) Closeout Letter TPF-5(224) Closeout Letter - Signed.pdf Other Public
Quarterly Progress Report: January 2010 - March 2010 Qtr_Rpt_3-31-10_joint.pdf Quarterly Progress Report Public
Quarterly Progress Report: April 2010 - June 2010 6-30-100qtrreptpf5_224.pdf Quarterly Progress Report Public
Quarterly Progress Report: July 2010 - September 2010 TPF5(224)20103rdQ.pdf Quarterly Progress Report Public
Quarterly Progress Report: October 2010 - December 2010 TPF5(224)JointDeteriorationFY11qtr2.pdf Quarterly Progress Report Public
Quarterly Progress Report: January - March 2011 TPF-5(224) Quarterly Report 3-31-11.pdf Quarterly Progress Report Public
Quarterly Report: April - June 2011 TPF-5(224) Quarterly Report_Apr11 - Jun11.pdf Quarterly Progress Report Public
Quarterly Report: July - Sept. 2011 TPF-5(224)_Jul-Sept2011.docx Quarterly Progress Report Public
Quarterly Report: December 2011 5(224) Dec2011 Qrtly Rpt.pdf Quarterly Progress Report Public
Quarterly Report: March 2012 5(224) FY12 qtr3.pdf Quarterly Progress Report Public
Quarterly Report: June 2012 June 2012 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: September 2012 TPF-5(224) Sept 2012.pdf Quarterly Progress Report Public
Quarterly Report: December 2012 5(224) Dec 2012 QR.pdf Quarterly Progress Report Public
Quarterly Report: March 2013 5(224)March 2013.pdf Quarterly Progress Report Public
Quarterly Report: June 2013 TPF-5(224) 2013 Q2.pdf Quarterly Progress Report Public
Quarterly Report: September 2013 TPF-5(224) Q3.pdf Quarterly Progress Report Public
Quarterly Report: Period Ending Dec 2013 5(224) QPR Dec 2013.docx Quarterly Progress Report Public
Quarterly Report: March 2014 5(224) QR March 2014.pdf Quarterly Progress Report Public
Quarterly Report: June 2014 TPF(224)_June 2014.docx Quarterly Progress Report Public
Quarterly Report: September 2014 TPF5(224)_September2014.pdf Quarterly Progress Report Public
Quarterly Report: December 2014 TPF-5 (224).pdf Quarterly Progress Report Public
Quarterly Report: March 2015 TPF-5(224)_March2015.pdf Quarterly Progress Report Public
Quarterly Report: June 2015 15_2 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: December 2015 2015_12-31 QPR 5(224).pdf Quarterly Progress Report Public
Quarterly Report: March 2016 2016_03-31 QPR 5(224).pdf Quarterly Progress Report Public
Effect of the Interfacial Zone Paper (Seattle 2012) TPF5(224) Zhang and Taylor_Seattle 2012.pdf Report Public
Joint Performance Manual: July 2012 optimum_joint_performance_guide1.pdf Report Public
No document attached.

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